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1.
Exp Dermatol ; 33(1): e14985, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38043130

RESUMO

Dermatological research relies on the availability of suitable models that most accurately reflect the in vivo situation. Primary keratinocytes obtained from skin reduction surgeries are not only limited by availability but have a short lifespan and show donor-specific variations, which hamper the understanding of general mechanisms. The spontaneously immortalized keratinocyte cell line HaCaT displays chromosomal aberrations and is known to differentiate in an abnormal manner. To overcome these issues, we validated different engineered immortalized cell lines created from primary human keratinocytes (NHK) as model systems to study epidermal function. Cell lines either immortalized by the expression of SV40 large T antigen and hTERT (NHK-SV/TERT) or by transduction with HPV E6/E7 (NHK-E6/E7) were analysed for their growth and differentiation behaviour using 2D and 3D culture systems and compared to primary keratinocytes. Both cell lines displayed a robust proliferative behaviour but were still sensitive to contact inhibition. NHK-E6/E7 could be driven into differentiation by Ca2+ switch, while NHK-SV/TERT needed withdrawal from any proliferative signal to initiate a delayed onset of differentiation. In 3D epidermal models both cell lines were able to reconstitute a stratified epidermis and functional epidermal barrier. However, only NHK-E6/E7 showed a degree of epidermal maturation and stratification that was comparable to primary keratinocytes.


Assuntos
Queratinócitos , Proteínas Oncogênicas Virais , Humanos , Queratinócitos/metabolismo , Linhagem Celular , Epiderme , Proteínas Oncogênicas Virais/metabolismo , Diferenciação Celular
2.
J Health Commun ; 28(11): 707-727, 2023 Nov 02.
Artigo em Inglês | MEDLINE | ID: mdl-37853725

RESUMO

Marketers often advertise products high in sugar, fat or calories as healthy products. With this potentially misleading information, they can influence eating decisions with negative consequences for human health. Consumers need the ability to uncover misleading food advertising. However, individuals' perceived knowledge and their actual objective abilities often drift apart - a phenomenon which has come to be known as the Dunning-Kruger Effect. Thus, this study set out to uncover the phenomenon's potential existence in health communication, more precisely in the area of food and media literacy. In a quantitative survey representative of the Austrian population (n = 1000) the Dunning-Kruger Effect (DKE) could be detected: Individuals who were most knowledgeable underestimated their food and media literacy, but - on the positive side - they acted as opinion leaders. Individuals who were least knowledgeable about advertising strategies used to market an unhealthy product as healthy and about the actual nutrition score of the advertised product were most likely to overestimate their own food and media literacy. Worryingly, further concerning consequences emerged, especially for least knowledgeable individuals. The study's results provide important implications for public health campaigns.


Assuntos
Publicidade , Comunicação em Saúde , Humanos , Publicidade/métodos , Alfabetização , Alimentos , Atitude
3.
Appetite ; 185: 106522, 2023 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-36893917

RESUMO

As social media continues to penetrate users' daily lives, concerns about its negative impact on body image issues and eating disorders are becoming focuses of research. It remains unclear whether social media should be held responsible for promoting orthorexia nervosa-a problematic and extreme fixation on healthy eating. The present study draws on socio-cultural theory and tests a social media-based model in the context of orthorexia nervosa to enhance knowledge of social media's influence on body image issues and orthorectic eating tendencies. The socio-cultural model was tested using structural equation modeling based on responses from a German-speaking sample (n = 647). The results indicate that social media users' involvement with health and fitness accounts is associated with higher orthorectic eating tendencies. Thin-ideal and muscular internalizations mediated this relationship. Interestingly, body dissatisfaction and appearance comparison were not mediators, which can be attributed to the characteristics of orthorexia nervosa. Higher involvement with health and fitness accounts on social media was also related to higher appearance comparisons. The results highlight the powerful influence of social media on orthorexia nervosa and the relevance of socio-cultural models in investigating the mechanisms underlying this influence.


Assuntos
Insatisfação Corporal , Transtornos da Alimentação e da Ingestão de Alimentos , Mídias Sociais , Humanos , Ortorexia Nervosa , Imagem Corporal , Inquéritos e Questionários
4.
Digit Health ; 8: 20552076221102769, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35615268

RESUMO

Objective: Social media fitness influencers are evolving into a new digital form of health communicators whom consumers might turn to for assistance with more physical activity and exercise at home, especially in the current COVID-19 crisis. Drawing from source credibility theory, social cognitive theory, protection motivation theory and literature on physical activity, physical fitness and gender, we analyse how male and female users' evaluations of social media fitness influencers and user health-related variables impact intentions to exercise with the social media fitness influencer. Methods: Two consecutive studies using male and female YouTube fitness influencers were carried out. Structural equation modelling was conducted to test the proposed models and estimate the path coefficients. Results: Study 1 (N = 507) shows that the respective influencer's perceived trustworthiness, expertise and attractiveness are important for the influencer's evaluation, and that it is the perceived motivating power rather than the attitude toward the influencer that increases intentions to exercise for male and female users. Study 2 (N = 445) extends Study 1 and shows that physical fitness, training involvement with YouTube fitness videos and lower health increase behavioural intentions. A more negative body image also raises intentions to exercise, but only among female users. Conclusion: Social media fitness influencers who are perceived as trustworthy, as experts and as attractive, can be effective for increasing men's and women's physical activity. Perceived motivating power of the influencer emerged as a key variable that predicts intentions to exercise. User health-related variables have different effects on intentions to exercise for men and women.

5.
J Pain Symptom Manage ; 63(6): e621-e632, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35595375

RESUMO

CONTEXT: Outcomes after cardiopulmonary resuscitation (CPR) remain poor. We have spent 10 years investigating an "informed assent" (IA) approach to discussing CPR with chronically ill patients/families. IA is a discussion framework whereby patients extremely unlikely to benefit from CPR are informed that unless they disagree, CPR will not be performed because it will not help achieve their goals, thus removing the burden of decision-making from the patient/family, while they retain an opportunity to disagree. OBJECTIVES: Determine the acceptability and efficacy of IA discussions about CPR with older chronically ill patients/families. METHODS: This multi-site research occurred in three stages. Stage I determined acceptability of the intervention through focus groups of patients with advanced COPD or malignancy, family members, and physicians. Stage II was an ambulatory pilot randomized controlled trial (RCT) of the IA discussion. Stage III is an ongoing phase 2 RCT of IA versus attention control in in patients with advanced chronic illness. RESULTS: Our qualitative work found the IA approach was acceptable to most patients, families, and physicians. The pilot RCT demonstrated feasibility and showed an increase in participants in the intervention group changing from "full code" to "do not resuscitate" within two weeks after the intervention. However, Stages I and II found that IA is best suited to inpatients. Our phase 2 RCT in older hospitalized seriously ill patients is ongoing; results are pending. CONCLUSIONS: IA is a feasible and reasonable approach to CPR discussions in selected patient populations.


Assuntos
Reanimação Cardiopulmonar , Tomada de Decisões , Idoso , Estado Terminal , Hospitalização , Humanos , Pacientes Internados , Ordens quanto à Conduta (Ética Médica)
6.
Artigo em Inglês | MEDLINE | ID: mdl-35162577

RESUMO

In recent years, the Internet of Medical Things (IoMT) has gained momentum. This development has only been intensified by the current COVID-19 crisis, which promotes the development of applications that can help stop the virus from spreading by monitoring people's movements and their social contacts. At the same time, it has become increasingly difficult for individuals to control the use of their private data by commercial companies. While Internet users claim to be highly interested in protecting their privacy, their behaviors indicate otherwise. This phenomenon is discussed in literature as the so-called privacy paradox. The existence of the privacy paradox has also been confirmed by previous studies, which found individuals' claims and actions to contradict one another. The present study investigates the following research questions: (1) What significance do individuals attribute to protecting their privacy, with a special focus on the health sector? (2) To what extent are they willing to grant commercial parties access to their data in order to use applications in general and health applications in particular? Results from seven focus groups with 40 respondents aged 20-30 years were conducted in an urban setting in Austria in late 2019. The respondents' inputs are meant to provide answers to these questions. The results indicate that, overall, the young generation is well-informed about the growing data collection and is quite critical of it. As such, their willingness to share information in the health context is only moderately pronounced. Thus, only a moderately pronounced privacy paradox can be detected for the health sector when compared to other sectors. In conclusion, implications and directions for further research are addressed.


Assuntos
COVID-19 , Dispositivos Eletrônicos Vestíveis , Adulto , Escuridão , Grupos Focais , Humanos , SARS-CoV-2 , Adulto Jovem
7.
Exp Dermatol ; 31(7): 1005-1013, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-35048417

RESUMO

Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease of the hair follicles leading to painful lesions, associated with increased levels of pro-inflammatory cytokines. Numerous guidelines recommend antibiotics like clindamycin and rifampicin in combination, as first-line systemic therapy in moderate-to-severe forms of inflammation. HS has been proposed to be mainly an auto-inflammatory disease associated with but not initially provoked by bacteria. Therefore, it has to be assumed that the pro-inflammatory milieu previously observed in HS skin is not solely dampened by the bacteriostatic inhibition of DNA-dependent RNA polymerase. To further clarify the mechanism of anti-inflammatory effects of rifampicin, ex vivo explants of lesional HS from 8 HS patients were treated with rifampicin, and its effect on cytokine production, immune cells as well as the expression of Toll-like receptor 2 (TLR2) were investigated. Analysis of cell culture medium of rifampicin-treated HS explants revealed an anti-inflammatory effect of rifampicin that significantly inhibiting interleukin (IL)-1ß, IL-6, IL-8, IL-10 and tumour necrosis factor (TNF)-α production. Immunohistochemistry of the rifampicin-treated explants suggested a tendency for it to reduce the expression of TLR2 while not affecting the number of immune cells.


Assuntos
Hidradenite Supurativa , Anti-Inflamatórios/uso terapêutico , Clindamicina/uso terapêutico , Humanos , Rifampina/farmacologia , Rifampina/uso terapêutico , Receptor 2 Toll-Like
8.
Artigo em Inglês | MEDLINE | ID: mdl-34501849

RESUMO

(1) Background: Increasing stress levels at the workplace constitute a concerning organizational trend, challenging not only employees but also organizations alike, as it is in most instances associated with increasing workloads. In consequence, employees have started to demand that organizations begin to accept responsibility for their health and well-being. The present contribution seeks to investigate, to which extent individuals are able to deal with stress and whether their employers and respective supervisors (leaders) accept responsibility for their health, for instance, by leading by example. In addition, the existence and support generated by the organization in form of Workplace Health Promotion (WPHP) is inquired. (2) Methods: Semi-structured qualitative interviews with 40 (full and part-time) employees from two European countries were conducted. (3) Results: The study with employees from Austria and Germany (n = 40) confirmed that employees have started to recognize the potential of the workplace as an environment, where individual health can be enhanced. Yet, the results showed that only a few companies have already put some WPHP measures into practice. Likewise, the implementation of healthy leadership is rather limited to date. (4) Conclusions: At present, companies are still more likely to delegate responsibility for employee health and well-being to their staff, having not fully realized the potential of healthy leadership and organizational health promotion. There is great potential to increase WPHP measures on the employer side, through both healthy leadership and supporting WPHP measures.


Assuntos
Saúde Ocupacional , Local de Trabalho , Promoção da Saúde , Nível de Saúde , Humanos , Liderança
9.
JMIR Serious Games ; 8(4): e16883, 2020 Dec 03.
Artigo em Inglês | MEDLINE | ID: mdl-33270028

RESUMO

BACKGROUND: In the United States, the most common sexually transmitted infection, human papillomavirus (HPV), causes genital warts and is associated with an estimated 33,700 newly diagnosed cancer cases annually. HPV vaccination, especially for preteens aged 11 to 12 years, is effective in preventing the acquisition of HPV and HPV-associated cancers. However, as of 2018, completion of the 2- or 3-dose HPV vaccination series increased only from 48.6% to 51.1% in teens aged 13 to 17 years, and this increase was observed only in boys. By comparison, 88.7% of teens had more than one dose of the recommended vaccine against tetanus, diphtheria, and acellular pertussis (Tdap), and 85.1% of teens had more than one dose of meningococcal vaccine. Immunizations for Tdap, meningococcal disease, and HPV can occur at the same clinical visit but often do not. OBJECTIVE: Vaccination against HPV is recommended for routine use in those aged 11 to 12 years in the United States, yet it is underutilized. We aimed to develop an educational video game to engage preteens in the decision to vaccinate. METHODS: Land of Secret Gardens is a metaphor for protecting seedlings (body) with a potion (vaccine). We screened 131 dyads of parents and preteens from 18 primary practices in North Carolina who had not initiated HPV vaccination. We measured vaccination intentions, story immersion, and game play and documented HPV vaccination rates. A total of 55 dyads were enrolled, and we randomly assigned 28 (21 completed) to play the game and 27 (26 completed) to the comparison group. RESULTS: In total, 18 preteens reported playing the game. The vaccination self-efficacy score was higher in the comparison group than the intervention group (1.65 vs 1.45; P=.05). The overall mean decisional balance score trended toward greater support of vaccination, although differences between the groups were not significant.. Vaccine initiation and completion rates were higher in the intervention group (22% vs 15%; P=.31) than in the comparison group (9% vs 2%; P=.10), although the difference was not significant. CONCLUSIONS: Video games help preteens in the decision to pursue HPV vaccination. A serious video game on HPV vaccination is acceptable to parents and preteens and can be played as intended. Gamification is effective in increasing preteen interest in HPV vaccination, as game features support decision making for HPV vaccination. TRIAL REGISTRATION: ClinicalTrials.gov NCT04627298; https://www.clinicaltrials.gov/ct2/show/NCT04627298.

10.
J Public Health Manag Pract ; 26(2): 159-167, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31348153

RESUMO

OBJECTIVE: Health care provider recommendation is a key determinant of human papillomavirus (HPV) vaccination. We developed an online training program for providers that addressed vaccine guidelines, hesitancy to strongly recommend the vaccine, and reluctance to discuss HPV infection as a sexually transmitted infection. DESIGN: Single-group evaluation with 3 waves. Providers completed a 29-item electronic survey with closed and open-ended response options after course completion. SETTING: Pediatric and family medicine practices in North Carolina. PARTICIPANTS: Prescribing clinicians (MD, DO, family nurse practitioner, physician assistant) who serve preteens aged 11 to 12 years. In wave 3, we expanded our communities to include nursing and medical staff. INTERVENTION: An asynchronous online course to promote preteen HPV vaccination. Topics included HPV epidemiology, vaccine recommendations from the Advisory Committee on Immunization Practices (ACIP), preteen-provider-parent communication, topics about hesitancy to seek vaccination, subjects related to sexual health, and practice-level strategies to increase vaccination rates. The course, approved for 12 CME and CNE credits, was live for 4 weeks and available on-demand for 3 additional months. MAIN OUTCOME MEASURES: Provider-reported change in vaccine communication, perceptions of course content in improving practice, and satisfaction with materials. RESULTS: A total of 113 providers from 25 practices enrolled in the course and 69 (61%) completed an evaluation. Providers spent an average of 6.3 hours on the course and rated the CDC (Centers for Disease Control and Prevention)-ACIP Web site and multiple resources on hesitancy and communication about sexually transmitted infection vaccines most highly of all materials across the 3 waves. Almost all (96%) agreed the course will improve their practice. About half of all participants said they were either "much more likely" (28%) or "more likely" (19%) to recommend the vaccine after course participation. CONCLUSIONS: An online format offers a highly adaptable and acceptable educational tool that promotes interpersonal communication and practice-related changes known to improve providers' vaccine uptake by their patients.


Assuntos
Pessoal de Saúde/educação , Vacinas contra Papillomavirus/uso terapêutico , Poder Familiar/tendências , Vacinação/métodos , Criança , Medicina de Família e Comunidade/educação , Medicina de Família e Comunidade/métodos , Pessoal de Saúde/estatística & dados numéricos , Humanos , Internet , Vacinas contra Papillomavirus/administração & dosagem , Poder Familiar/psicologia , Pediatria/educação , Pediatria/métodos , Inquéritos e Questionários , Vacinação/psicologia , Vacinação/normas
11.
Nat Commun ; 10(1): 4097, 2019 09 10.
Artigo em Inglês | MEDLINE | ID: mdl-31506438

RESUMO

Phenotypic variation of quantitative traits is orchestrated by a complex interplay between the environment (e.g. diet) and genetics. However, the impact of gene-environment interactions on phenotypic traits mostly remains elusive. To address this, we feed 1154 mice of an autoimmunity-prone intercross line (AIL) three different diets. We find that diet substantially contributes to the variability of complex traits and unmasks additional genetic susceptibility quantitative trait loci (QTL). By performing whole-genome sequencing of the AIL founder strains, we resolve these QTLs to few or single candidate genes. To address whether diet can also modulate genetic predisposition towards a given trait, we set NZM2410/J mice on similar dietary regimens as AIL mice. Our data suggest that diet modifies genetic susceptibility to lupus and shifts intestinal bacterial and fungal community composition, which precedes clinical disease manifestation. Collectively, our study underlines the importance of including environmental factors in genetic association studies.


Assuntos
Cruzamentos Genéticos , Dieta , Genes , Estudos de Associação Genética , Característica Quantitativa Herdável , Animais , Animais não Endogâmicos , Anticorpos Antinucleares/genética , Bactérias/crescimento & desenvolvimento , Biodiversidade , Feminino , Fungos/crescimento & desenvolvimento , Predisposição Genética para Doença , Nefrite Lúpica/genética , Nefrite Lúpica/imunologia , Masculino , Camundongos , Microbiota , Mapeamento Físico do Cromossomo , Locos de Características Quantitativas/genética , Baço/metabolismo , Transcriptoma/genética , Sequenciamento Completo do Genoma
12.
Women Health ; 59(8): 867-882, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-30714487

RESUMO

We explored the use of different advertising appeals in breast cancer detection messages. We analyzed the extent to which emotional appeals were applied in advertisements that promoted two forms of breast cancer detection behaviors: breast self-examination (BSE) and mammographic screening. Findings of a content analysis of 456 breast cancer-related advertisements gathered in February 2016 indicated that textual fear appeals, humor appeals and erotic appeals were more likely to be featured in BSE-promoting advertisements than in breast cancer-related advertisements with other message purposes. While shame-guilt appeals were more likely to be used in mammography-promoting messages, humor and erotic appeals were less likely to be applied. Regarding hybrid message appeals, combinations of humor appeals with erotic, fear and shame-guilt appeals, as well as combined erotic-fear appeals were found more in BSE-promotion messages. Mammography-promoting messages made less use of hybrid messages with a humorous touch as compared to breast cancer advertisements with other message purposes. The results are in contrast to research findings on the effectiveness of message appeals and thus allow to some extent the evaluation of whether scientific findings on the effectiveness of message appeals are reflected in the current advertising practice.


Assuntos
Publicidade/estatística & dados numéricos , Neoplasias da Mama/diagnóstico , Promoção da Saúde/métodos , Internet , Comunicação Persuasiva , Neoplasias da Mama/prevenção & controle , Autoexame de Mama , Feminino , Humanos , Mamografia
13.
Games Health J ; 7(1): 51-66, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-29161529

RESUMO

INTRODUCTION: Vaccination against human papillomavirus (HPV) is routinely recommended for ages 11-12, yet in 2016 only 49.5% of women and 37.5% of men had completed the three-dose series in the United States. Offering information and cues to action through a serious videogame for preteens may foster HPV vaccination awareness, information seeking, and communication. MATERIALS AND METHODS: An iterative process was used to develop an interactive videogame, Land of Secret Gardens. Three focus groups were conducted with 16 boys and girls, ages 11-12, for input on game design, acceptability, and functioning. Two parallel focus groups explored parents' (n = 9) perspectives on the game concept. Three researchers identified key themes. RESULTS: Preteens wanted a game that is both entertaining and instructional. Some parents were skeptical that games could be motivational. A back-story about a secret garden was developed as a metaphor for a preteen's body and keeping it healthy. The goal is to plant a lush secret garden and protect the seedlings by treating them with a potion when they sprout to keep them healthy as they mature. Points to buy seeds and create the potion are earned by playing mini-games. Throughout play, players are exposed to messaging about HPV and the benefits of the vaccine. Both boys and girls liked the garden concept and getting facts about HPV. Parents were encouraged to discuss the game with their preteens. CONCLUSION: Within a larger communication strategy, serious games could be useful for engaging preteens in health decision making about HPV vaccination.


Assuntos
Tomada de Decisões , Promoção da Saúde/métodos , Vacinas contra Papillomavirus/administração & dosagem , Jogos de Vídeo/psicologia , Criança , Feminino , Grupos Focais , Humanos , Masculino , Motivação , Pesquisa Qualitativa , Inquéritos e Questionários
14.
Vaccine ; 36(1): 122-127, 2018 01 02.
Artigo em Inglês | MEDLINE | ID: mdl-29169892

RESUMO

OBJECTIVES: HPV vaccination at the recommended ages of 11-12 is highly effective yet has stalled well below the goal of 80% of the population. We evaluated a statewide practice-based communication intervention (tools: brochures, posters, online training for providers and resources for parents, video game for preteens) to persuade parents, preteens and providers to vaccinate against HPV. The 9-month intervention started May 1, 2015. METHODS: We compared vaccine initiation and completion rates over three 9-month periods (baseline, intervention, post-intervention) between practices enrolled in the intervention and a comparable comparison group. All practices reported to the North Carolina Immunization Registry (NCIR) and had at least 100 11- and 12-year-olds who had not completed the HPV vaccine series. Of 175 eligible practices, the 14 intervention practices included 19,398 individuals and the 161 comparison practices included 127,896 individuals. An extended Cox model was used to test the intervention effect. RESULTS: The intervention had a significant effect on both initiation and completion during the intervention and post-intervention periods; the estimated hazard ratio (HR) for initiation was 1.17 (p = .004) during the intervention and 1.11 (p = .005) post-intervention. Likewise, completion during the intervention period was 17% higher in intervention practices, after controlling for baseline differences. This effect increased in the post-intervention period to 30% higher (p = .03). CONCLUSIONS: Individuals in the intervention practices were 17% more likely to initiate and complete HPV vaccination than in the comparison practices during the intervention period and the effect was sustained post-intervention. This intervention is promising for increasing rates of HPV vaccination at ages 11-12.


Assuntos
Comunicação , Imunização/métodos , Infecções por Papillomavirus/prevenção & controle , Vacinas contra Papillomavirus/administração & dosagem , Atenção Primária à Saúde/métodos , Adolescente , Criança , Feminino , Humanos , Imunização/estatística & dados numéricos , North Carolina/epidemiologia , Infecções por Papillomavirus/epidemiologia , Pais , Modelos de Riscos Proporcionais
15.
N C Med J ; 78(5): 296-303, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28963261

RESUMO

BACKGROUND North Carolina has the third largest community college system in the nation and reaches residents in all 100 counties. Few studies have focused on the health of employees who work at these institutions. We assessed the current status of and interest in supporting health promotion efforts among North Carolina Community College System members.METHODS North Carolina Community College System presidents completed a brief 15-item survey assessing support for and interest in offering health promotion programs. Wellness coordinators completed a 60-item questionnaire assessing current health promotion programming and organizational, environmental, and policy supports for health promotion efforts. Onsite interviews with a sub-sample of Wellness coordinators offered insights into important implementation considerations. We examined differences by campus size with Fisher's exact test.RESULTS All 58 presidents (100%) and 51 wellness coordinators (88%) completed surveys. Ten percent of colleges offered comprehensive employee health promotion programming. Most offered physical activity (70.6%), tobacco cessation (51.0%), weight loss/management (49.0%), and/or nutrition counseling (47.1%). Larger colleges were more likely to offer programming and environmental support. Nearly all presidents (89.7%) believed it is "very" or "extremely" important to offer health promotion programs to employees, and most (84%) were interested in promoting health through a university partnership.LIMITATIONS Despite very high survey response rates from presidents and wellness coordinators at each community college, onsite interviews were only done at select campuses, limiting the generalizability and scope of conclusions derived from interview data.CONCLUSION Community colleges in North Carolina are promising settings for promoting employee health. Findings identify resources, barriers, and technical assistance that could facilitate greater adoption and implementation of programs.


Assuntos
Atitude Frente a Saúde , Promoção da Saúde/métodos , Promoção da Saúde/estatística & dados numéricos , Saúde Ocupacional , Universidades/estatística & dados numéricos , Estudos Transversais , Humanos , North Carolina/epidemiologia , Inquéritos e Questionários
16.
PLoS One ; 12(7): e0180853, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28700632

RESUMO

Psoriasis is a frequent and often severe inflammatory skin disease, characterized by altered epidermal homeostasis. Since we found previously that Akt/mTOR signaling is hyperactivated in psoriatic skin, we aimed at elucidating the role of aberrant mTORC1 signaling in this disease. We found that under healthy conditions mTOR signaling was shut off when keratinocytes switch from proliferation to terminal differentiation. Inflammatory cytokines (IL-1ß, IL-17A, TNF-α) induced aberrant mTOR activity which led to enhanced proliferation and reduced expression of differentiation markers. Conversely, regular differentiation could be restored if mTORC1 signaling was blocked. In mice, activation of mTOR through the agonist MHY1485 also led to aberrant epidermal organization and involucrin distribution. In summary, these results not only identify mTORC1 as an important signal integrator pivotal for the cells fate to either proliferate or differentiate, but emphasize the role of inflammation-dependent mTOR activation as a psoriatic pathomechanism.


Assuntos
Queratinócitos/metabolismo , Complexos Multiproteicos/metabolismo , Serina-Treonina Quinases TOR/metabolismo , Adolescente , Adulto , Idoso , Animais , Diferenciação Celular/genética , Diferenciação Celular/fisiologia , Linhagem Celular , Proliferação de Células/genética , Proliferação de Células/fisiologia , Feminino , Humanos , Imunoensaio , Imuno-Histoquímica , Queratinócitos/fisiologia , Masculino , Alvo Mecanístico do Complexo 1 de Rapamicina , Camundongos , Camundongos Endogâmicos BALB C , Pessoa de Meia-Idade , Complexos Multiproteicos/genética , RNA Interferente Pequeno/genética , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Transdução de Sinais/genética , Transdução de Sinais/fisiologia , Serina-Treonina Quinases TOR/genética , Adulto Jovem
17.
Acta Derm Venereol ; 97(9): 1087-1094, 2017 Oct 02.
Artigo em Inglês | MEDLINE | ID: mdl-28597024

RESUMO

The mTOR (mechanistic target of rapamycin) inhibitor rapamycin has long been known for its immune suppressive properties, but it has shown limited therapeutic success when given systemically to patients with psoriasis. Recent data have shown that the mTOR pathway is hyperactivated in lesional psoriatic skin, which probably contributes to the disease by interfering with maturation of keratinocytes. This study investigated the effect of topical rapamycin treatment in an imiquimod-induced psoriatic mouse model. The disease was less severe if the mice had received rapamycin treatment. Immunohistological analysis revealed that rapamycin not only prevented the activation of mTOR signalling (P-mTOR and P-S6 levels), but almost normalized the expression of epidermal differentiation markers. In addition, the influx of innate immune cells into the draining lymph nodes was partially reduced by rapamycin treatment. These data emphasize the role of mTOR signalling in the pathogenesis of psoriasis, and support the investigation of topical mTOR inhibition as a novel anti-psoriatic strategy.


Assuntos
Imunossupressores/farmacologia , Psoríase/tratamento farmacológico , Sirolimo/farmacologia , Serina-Treonina Quinases TOR/antagonistas & inibidores , Administração Tópica , Aminoquinolinas/efeitos adversos , Animais , Caspase 14/metabolismo , Células Dendríticas/metabolismo , Modelos Animais de Doenças , Imiquimode , Queratina-10/metabolismo , Queratina-14/metabolismo , Antígeno Ki-67/metabolismo , Células de Langerhans/metabolismo , Linfonodos/metabolismo , Macrófagos/metabolismo , Proteínas de Membrana/metabolismo , Camundongos Endogâmicos BALB C , Neovascularização Fisiológica/efeitos dos fármacos , Precursores de Proteínas/metabolismo , Psoríase/induzido quimicamente , Pele/metabolismo
18.
Phys Rev Lett ; 116(23): 237001, 2016 Jun 10.
Artigo em Inglês | MEDLINE | ID: mdl-27341250

RESUMO

We report on a combined theoretical and experimental investigation of the superconducting state in the quasi-two-dimensional organic superconductor κ-(ET)_{2}Cu[N(CN)_{2}]Br. Applying spin-fluctuation theory to a low-energy, material-specific Hamiltonian derived from ab initio density functional theory we calculate the quasiparticle density of states in the superconducting state. We find a distinct three-peak structure that results from a strongly anisotropic mixed-symmetry superconducting gap with eight nodes and twofold rotational symmetry. This theoretical prediction is supported by low-temperature scanning tunneling spectroscopy on in situ cleaved single crystals of κ-(ET)_{2}Cu[N(CN)_{2}]Br with the tunneling direction parallel to the layered structure.

19.
Acta Derm Venereol ; 96(2): 162-8, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26315601

RESUMO

Psoriasis primarily affects the skin, but also has a systemic dimension and is associated with severe comorbidities. Since endothelial cells play an important role in psoriasis as well as in the development of cardiovascular comorbidities, we investigated whether a common mechanism, namely cytokine-induced insulin resistance, underlies both pathologies. Activation of the insulin pathway was studied in psoriatic skin and dermal endothelial cells. Expression of adhesion molecules was assessed by flow cytometry, as well as their biological function in flow chamber experiments. The phosphorylation status of Akt, a central kinase in the insulin pathway, suggests that endothelial cells within psoriatic plaques are rendered insulin resistant by pro-inflammatory cytokines. Insulin counteracts the expression of adhesion molecules, but has limited effects on interactions between T cells and endothelial cells. Pro-inflammatory cytokines induce insulin resistance in endothelial cells, which may contribute to the development of the inflammatory infiltrate in psoriasis.


Assuntos
Moléculas de Adesão Celular/metabolismo , Células Endoteliais/metabolismo , Resistência à Insulina , Psoríase/metabolismo , Pele/metabolismo , Células Cultivadas , Técnicas de Cocultura , Citocinas/farmacologia , Células Endoteliais/efeitos dos fármacos , Células Endoteliais/imunologia , Humanos , Mediadores da Inflamação/farmacologia , Insulina/metabolismo , Fosforilação , Proteínas Proto-Oncogênicas c-akt/metabolismo , Psoríase/imunologia , Linfócitos T/imunologia , Linfócitos T/metabolismo , Migração Transendotelial e Transepitelial , Regulação para Cima
20.
J Public Health Manag Pract ; 22(2): 200-3, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-25723874

RESUMO

Innovative models to facilitate more rapid uptake of research findings into practice are urgently needed. Community members who engage in research can accelerate this process by acting as adoption agents. We implemented an Evidence Academy conference model bringing together researchers, health care professionals, advocates, and policy makers across North Carolina to discuss high-impact, life-saving study results. The overall goal is to develop dissemination and implementation strategies for translating evidence into practice and policy. Each 1-day, single-theme, regional meeting focuses on a leading community-identified health priority. The model capitalizes on the power of diverse local networks to encourage broad, common awareness of new research findings. Furthermore, it emphasizes critical reflection and active group discussion on how to incorporate new evidence within and across organizations, health care systems, and communities. During the concluding session, participants are asked to articulate action plans relevant to their individual interests, work setting, or area of expertise.


Assuntos
Prática Clínica Baseada em Evidências , Política de Saúde/tendências , Modelos Teóricos , Pesquisa/normas , Humanos , North Carolina
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